Reactivation of the Case Drain Filter of the Electric Pump of the Blue Hydraulic System

TASK 29-10-00-440-003-A
Reactivation of the Case Drain Filter of the Electric Pump of the Blue Hydraulic System

FIN: 2084GM

1. Reason for the Job
MMEL 29-10-09A
HYDRAULIC CASE DRAIN FILTER
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	CONTAINER 2 L (0.53 USGAL)
No specific	2	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.02ABA1)	Phosphate Ester Hydraulic Fluid-General Power - -
No specific	lockwire, corrosion-resistant steel, dia. 0.8 mm (0.032 in.)

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
195BB

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
2	FILTER ELEMENT	AIPC 29-12-43-01-020

E. Referenced Information

REFERENCE	DESIGNATION
TASK 12-12-29-611-001-A	Fill the Hydraulic Fluid Reservoir with a Hand Pump
TASK 12-12-29-611-002-A	Fill the Hydraulic Fluid Reservoir with a Hydraulic Service Cart
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 29-00-00-910-002-A	Safety Procedures of the Hydraulic System
TASK 29-10-00-863-003-A	Pressurize the Blue Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-003-A-01	Pressurize the Blue Hydraulic System with the Blue Electric Pump
TASK 29-10-00-864-003-A	Depressurize the Blue Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 29-14-00-614-002-A	Pressurization of the Hydraulic Reservoirs through the Ground Connector
TASK 29-14-00-614-002-A-01	Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)
Case Drain Filter of the Electric Pump of the Blue Hydraulic System

3. Job Set-up
Subtask 29-10-00-860-093-A

A. Aircraft Maintenance Configuration

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Put the WARNING NOTICE(S) in position to tell persons not to pressurize the Blue hydraulic system:

in the cockpit on the hydraulic section 40VU of the overhead panel,
on the ground service panel of the Blue hydraulic system.

(3) Make sure that the Blue hydraulic system is depressurized and put it in the maintenance configuration.
(Ref. AMM TASK 29-00-00-864-001).
(4) Depressurize the reservoir of the Blue hydraulic system (Ref. AMM TASK 29-14-00-614-001).

Subtask 29-10-00-010-062-A

B. Open the access door 195BB.

Subtask 29-10-00-941-055-A

C. Put a CONTAINER 2 L (0.53 USGAL) in position under the filter to collect the hydraulic fluid.

4. Procedure
Subtask 29-10-00-440-052-A

A. Reactivation of the Case Drain Filter (2084GM)
(1) Do the trouble-shooting of the system to find the cause of the clogged filter and do the applicable corrective actions.
(2) Remove and discard the lockwire between the filter bowl (3) and the filter head (1).
(3) Remove the filter bowl (3).
(4) Make sure that the O-ring (4) is correctly installed on the new AIPC 29-12-43-01-020 FILTER ELEMENT (2).

NOTE: The O-ring (4) is part of the filter element (2).

(5) Apply Phosphate Ester Hydraulic Fluid-General Power - - (Material No.02ABA1) to the O-ring (4) and to the threads of the filter bowl (3).
(6) Do a check of the filter element (2) and make sure that it is clean and not damaged.
(7) Put the filter element (2) together with the O-ring (4) in position in the filter bowl (3).
(8) Install the filter bowl (3) together with the filter element (2) in the filter head (1).
(9) Tighten the filter bowl (3) with your hands.
(10) Safety the filter bowl (3) to the filter head (1) with lockwire, corrosion-resistant steel, dia. 0.8 mm (0.032 in.).
(11) If the red clogging indicator is out, push it in to set it again.

Subtask 29-10-00-860-094-A

B. Preparation for the Test
(1) Make sure that the content of the reservoir of the Blue hydraulic system are correct. Add fluid as necessary (Ref. AMM TASK 12-12-29-611-001) or (Ref. AMM TASK 12-12-29-611-002).
(2) Pressurize the reservoir of the Blue hydraulic system (Ref. AMM TASK 29-14-00-614-002).
(3) Remove the WARNING NOTICE(S).
(4) Remove the container.

Subtask 29-10-00-790-051-A

C. Test
(1) Pressurize the Blue hydraulic system with the electric pump (Ref. AMM TASK 29-10-00-863-003).
(2) Make sure there are no leaks from the filter assembly, and that the clogging indicator stays in.
(3) If the clogging indicator comes out, push it in to set it again. If it will not stay in, do the trouble-shooting of the filter assembly to find the cause.
(4) Depressurize the Blue hydraulic system (Ref. AMM TASK 29-10-00-864-003).

5. Close-up
Subtask 29-10-00-410-062-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the access door 195BB.

[Rev.10 from 2021] 2026.04.01 00:13:57 UTC